Any re-steal advice?

[Noel Montgomery]

What variables are most important when deciding to attempt a re-steal?

I'm trying to add this element to my game but have been hesitant to experiment with it as a misfire can be devastating in the late stages of a tourney.

An example of a re-steal working for me was when I was on the small blind with K8s (too loose for a re-steal?). There were about 25 players left out of ~400 in a $33 UB tourney. It's folded to the CO (I hadn't seen him open a hand yet, and we both had approximately 15x bb) who opens for 6x bb. I read this as a definite steal, since the bet seemed too large from a LP player to want action. This table most likely viewed me as TAG. I re-raised all in, and he folded. Was this correct? Was I lucky? Is there a range of hands you use for re-steals?